The main two and also more expensive fees payable would be the Building Application Fee and the fee at the end to obtain the Compliance Certificate (CCC). Each project will also need to have Building Inspections at certain intervals of the project and some projects could see a meeting fee and other smaller fees payable too. The Council has a cost calculater to determine what deposit will be needed at the start of the project and a final invoice will then be rendered by them in the end. Feel free to read a more detailed version of the fees in the below link and/or use the deposit calculator: